Geocalyx orientalis Bescherelle & Spruce (1891: 189)

Ah-Peng, Claudine, Bardat, Jacques, Pócs, Tamás, Söderström, Lars, Staménoff, Pierre & Strasberg, Dominique, 2012, Red List of liverworts and hornworts for Réunion (Mascarene archipelago), Phytotaxa 68 (1), pp. 1-23 : 12

22. Geocalyx orientalis Bescherelle & Spruce (1891: 189)

Family:— Geocalycaceae .

Distribution:— Endemic.

Habitat:— Soil and rotten wood in montane forest.

Threat:— Area of occupancy <4 km 2 on the island. Major threats are habitat destruction and urbanization in the populated Cirque de Cilaos area.

IUCN threat category:— CR[B2ab(iii)]

Specimens:— One locality known in Réunion: Cirque de Cilaos , le long du sentier des eaux et forêt en direction de la cascade, 1500 m alt. epiphyte, 25.12.1973, Onraedt 73.R.1231 ( BR); Cirque de Cilaos , Mare à Joseph, sur rocher, 1300 m alt., 13.07.1979, Onraedt 79.R.8035 ( BR); Cirque de Cilaos, Bras de Benjoin, forêt de bois de couleur, 1450 m alt., 25.12.1973, de Sloover 17724 ( BR) ( Figure 4) .